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<html> <body> <video id="myVideo" width="320" height="240" controls> <source src="movie.mp4" type="video/mp4"> <source src="movie.ogg" type="video/ogg"> Your browser does not support the video tag.</video><br><button onclick="enableAutoplay()" type="button">Enable autoplay</button><button onclick="disableAutoplay()" type="button">Disable autoplay</button><button onclick="checkAutoplay()" type="button">Check autoplay status</button><script>var x = document.getElementById("myVideo");function enableAutoplay() { x.autoplay = true; x.load();} function disableAutoplay() { x.autoplay = false; x.load();} function checkAutoplay() { alert(x.autoplay);} </script> </body> </html>